Robust vehicle tracking algorithm is an important precondition for realizing traffic event detection,but occlusion is a key influence factor for vehicle tracking.

• 鲁棒的车辆跟踪是实现交通事件自动检测的重要前提,车辆跟踪中的车辆相互遮挡则是影响车辆跟踪结果的关键因素。